That's seems like a good price go for it as long as it has a clean history.

I'm not an M3Wman but someone will be along who can answer you the tyre question.

Here is a comparison for you at auction last week a 2012 model 7,000mls. $33,000.
https://bringatrailer.com/listing/2012-morgan-3-wheeler/

2009 4/4 Sport Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Con Green +8 prev